Lens module and electronic equipment

Abstract

The invention discloses a lens module and electronic equipment, and the lens module comprises a housing which is provided with a light through hole; the lens group is arranged in the shell, the lens group comprises a prism and a first lens, light rays sequentially pass through the prism and the first lens through the light through hole, and the first lens is movably connected with the shell in the first direction; the first driving piece is located on one side, in the second direction, of the first lens, the first driving piece comprises a first coil and a first driving magnet which are oppositely arranged at intervals in the second direction, one of the first coil and the first driving magnet is arranged in the shell, and the other of the first coil and the first driving magnet is arranged on the first lens; the first driving magnet comprises a plurality of first magnetic poles and a plurality of second magnetic poles, the first magnetic poles and the second magnetic poles are alternately arranged in the first direction, and the first magnetic poles and the second magnetic poles are opposite in magnetism. The first coil and the first driving magnet drive the first lens to move along a first direction so as to enable the lens module to focus.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a lens module and an electronic equipment. Background Art

[0002] At present, people have higher and higher requirements for the shooting function of electronic devices. However, due to the limitations of size and structure, traditional cameras cannot meet users' needs for long-focus and high-definition photography, while periscope cameras can achieve long-focus shooting without increasing the thickness of the device.

[0003] In the related technology, periscope cameras often have the problem of excessive leakage magnetic influence when the demand for focus stroke increases sharply and the focus and anti-shake driving devices are large in size, which in turn affects the close stacking of multiple cameras and reduces the space utilization of electronic equipment. Summary of the invention

[0004] The present application aims to provide a lens module and an electronic device, which at least solve the problem of excessive magnetic leakage of the electronic device.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In the first aspect, an embodiment of the present application proposes a lens module, comprising: a shell body, provided with a light-through hole; a lens group, arranged in the shell body, the lens group comprising a prism and a first lens, light passes through the prism and the first lens in sequence from the light-through hole, and the first lens is movably connected to the shell body along a first direction; a first driving member, located on one side of the first lens along a second direction, the first driving member comprising a first coil and a first driving magnet, which are spaced and relatively arranged along the second direction, one of the first coil and the first driving magnet is arranged on the shell body, and the other is arranged on the first lens, wherein the first driving magnet comprises a plurality of first magnetic poles and a plurality of second magnetic poles, the plurality of first magnetic poles and the plurality of second magnetic poles are alternately arranged along the first direction, the magnetic properties of the first magnetic pole and the second magnetic pole are opposite, and when the first coil is energized, the first coil and the first driving magnet drive the first lens to move along the first direction to focus the lens module.

[0007] In a second aspect, an embodiment of the present application proposes an electronic device, comprising: a frame; and a lens module as proposed in any one of the first aspects.

[0008] In an embodiment of the present application, the lens module includes a housing, a lens group and a first driving member, the lens group includes a prism and a first lens, the light enters the prism from the light hole, and then enters the first lens, and telephoto shooting is achieved without increasing the overall thickness of the camera module. The first driving member includes a first coil and a first driving magnet, one of the first coil and the first driving magnet is arranged on the housing, and the other is arranged on the first lens. When the first coil is energized, under the action of the magnetic field of the first coil and the magnetic field of the first driving magnet, the first lens is close to the prism or away from the prism along the second direction, thereby realizing the focusing function of the lens module and improving the shooting quality. Among them, the first driving magnet includes a plurality of first magnetic poles and a plurality of second magnetic poles, the magnetic properties of the first magnetic pole and the second magnetic pole are opposite, and the plurality of first magnetic poles and the plurality of second magnetic poles are alternately arranged along the first direction, that is, the first driving magnet is set to a multi-pole structure, which can greatly reduce the external leakage magnetic field of the camera module, thereby facilitating the close stacking of multiple cameras, effectively improving the space utilization rate, and realizing the miniaturization design of electronic equipment.

[0009] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0011] Figure 1 is a schematic structural diagram of a housing according to an embodiment of the present application;

[0012] Figure 2 is one of the structural schematic diagrams of the lens module according to an embodiment of the present application;

[0013] Figure 3 is a second structural schematic diagram of a lens module according to an embodiment of the present application;

[0014] Figure 4 This is a third structural schematic diagram of a lens module according to an embodiment of the present application;

[0015] Figure 5 This is a fourth structural schematic diagram of a lens module according to an embodiment of the present application;

[0016] Figure 6 is a schematic structural diagram of a first driving member according to an embodiment of the present application;

[0017] Figure 7 is a schematic diagram of the operation of the segmented switching first coil according to an embodiment of the present application;

[0018] Figure 8is a thrust simulation diagram of the first coil during the movement of the first magnet according to an embodiment of the present application;

[0019] Fig. 9 is a magnetic flux leakage simulation diagram of a lens module according to an embodiment of the present application;

[0020] Fig.10 is a fifth structural schematic diagram of a lens module according to an embodiment of the present application;

[0021] Fig.11 is a sixth structural schematic diagram of a lens module according to an embodiment of the present application;

[0022] Fig.12 is a seventh structural schematic diagram of a lens module according to an embodiment of the present application;

[0023] Fig.13 is an eighth structural schematic diagram of a lens module according to an embodiment of the present application;

[0024] Fig.14 is a ninth structural diagram of a lens module according to an embodiment of the present application;

[0025] Fig.15 is one of the structural schematic diagrams of the elastic member according to the embodiment of the present application;

[0026] Fig.16 is a second structural schematic diagram of an elastic member according to an embodiment of the present application;

[0027] Fig.17 This is a third structural schematic diagram of an elastic member according to an embodiment of the present application;

[0028] Fig.18 This is a fourth structural schematic diagram of the elastic member according to an embodiment of the present application;

[0029] Fig.19 is a fifth structural schematic diagram of an elastic member according to an embodiment of the present application;

[0030] Fig. 20 This is the sixth structural schematic diagram of the elastic member according to the embodiment of the present application.

[0031] Reference numerals:

[0032] 1 shell, 10 light hole, 12 avoidance part, 14 shell, 16 base, 2 lens group, 20 prism, 202 incident surface, 204 reflection surface, 206 exit surface, 21 second lens, 22 first lens, 23 magnetic attraction member, 24 first carrier, 25 second carrier, 250 mounting groove, 3 first driving member, 30 first coil, 32 first driving magnet, 320 first magnetic pole, 322 second magnetic pole, 324 sliding member, 3240 guide rod, 40 first sensing magnet, 41 magnetic sensor, 42 second sensing magnet, 43 first sensing chip, 44 third sensing magnet, 45 second sensing chip, 5 rotating bracket, 50 first rotating part, 502 first ball, 52 second rotating part, 520 second ball, 6 second driving member, 60 second driving magnet, 61 second coil, 62 third driving magnet, 63 third coil, 7 elastic member, 70 supporting part, 72 elastic bending part.

[0033] Fig.21 It is a magnetic leakage simulation diagram of a lens module in the related art.

[0034] Reference numerals:

[0035] 1' magnet, 2' coil. DETAILED DESCRIPTION

[0036] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0037] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects.

[0038] In the description of the present application, it should be understood that the terms "center", "top", "bottom", "inside", "outside", "axial", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Combine the following Figure 1-Figure 20 A lens module and an electronic device according to an embodiment of the present application are described.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, according to some embodiments of the present application, the lens module includes: a shell 1, which is provided with a light hole 10; a lens group 2, which is arranged in the shell 1, and the lens group 2 includes a prism 20 and a first lens 22, and the light passes through the prism 20 and the first lens 22 in sequence from the light hole 10, and the first lens 22 is movably connected to the shell 1 along the first direction; a first driving member 3, which is located on one side of the first lens 22 along the second direction, and the first driving member 3 includes a first coil 30 and a first driving magnet 32 ​​that are spaced and arranged oppositely along the second direction, one of the first coil 30 and the first driving magnet 32 ​​is arranged on the shell 1, and the other is arranged on the first lens 22, wherein the first driving magnet 32 ​​includes a plurality of first magnetic poles 320 and a plurality of second magnetic poles 322, and the plurality of first magnetic poles 320 and the plurality of second magnetic poles 322 are alternately arranged along the first direction, and the magnetic properties of the first magnetic poles 320 and the second magnetic poles 322 are opposite, and when the first coil 30 is energized, the first coil 30 and the first driving magnet 32 ​​drive the first lens 22 to move along the first direction to focus the lens module.

[0042] In an embodiment of the present application, the lens module includes a housing 1, a lens group 2 and a first driving member 3. The lens group 2 includes a prism 20 and a first lens 22. Light enters the prism 20 from the light hole 10 and then enters the first lens 22, thereby achieving telephoto shooting without increasing the overall thickness of the camera module. The first driving member 3 includes a first coil 30 and a first driving magnet 32. One of the first coil 30 and the first driving magnet 32 ​​is disposed on the housing 1, and the other is disposed on the first lens 22. When the first coil 30 is energized, under the action of the magnetic field of the first coil 30 and the magnetic field of the first driving magnet 32, the first lens 22 moves closer to the prism 20 or away from the prism 20 along the second direction, thereby achieving the focusing function of the lens module and improving the shooting quality. Among them, Figure 6 and Fig. 9As shown, the first driving magnet 32 ​​includes a plurality of first magnetic poles 320 and a plurality of second magnetic poles 322. The magnetic properties of the first magnetic poles 320 and the second magnetic poles 322 are opposite, and the plurality of first magnetic poles 320 and the plurality of second magnetic poles 322 are alternately arranged along the first direction, that is, the first driving magnet 32 ​​is set to a multi-pole structure, which can greatly reduce the external magnetic leakage of the camera module, thereby facilitating the close stacking of multiple cameras, effectively improving space utilization, and realizing the miniaturized design of electronic equipment.

[0043] In a specific application, the first driving magnet 32 ​​may be arranged at intervals or closely arranged in sequence with the multiple first magnetic poles 320 and the multiple second magnetic poles 322. Optionally, the first driving magnet 32 ​​includes multiple magnets, and the magnets with the polarity of the first magnetic poles 320 and the magnets with the polarity of the second magnetic poles 322 are arranged alternately one by one along the first direction, or the first driving magnet 32 ​​is multi-polarly magnetized so that the multiple first magnetic poles 320 and the multiple second magnetic poles 322 are arranged alternately one by one along the first direction.

[0044] It can be understood that the first direction is the optical axis direction of the second lens 21 and the first lens 22 .

[0045] Optionally, the first magnetic pole 320 is one of the N pole and the S pole, and the second magnetic pole 322 is the other of the N pole and the S pole.

[0046] Optionally, the first coil 30 is fixed on the housing 1 , and the first driving magnet 32 ​​is fixed on the first lens 22 , so as to facilitate the wiring of the first coil 30 .

[0047] According to some embodiments of the present application, optionally, the number of the first coils 30 is at least two, and the at least two first coils 30 are spaced apart along the first direction. When the first coils 30 are energized, the at least two first coils 30 work alternately or simultaneously.

[0048] In this embodiment, the number of the first coils 30 is at least two, and at least two first coils 30 are arranged at intervals along the first direction, and when powered on, they drive the first driving magnet 32 ​​to move alternately in sequence to improve the thrust efficiency of the first coil 30, or at least two coils drive the first driving magnet 32 ​​to move at the same time to achieve greater thrust.

[0049] like Figure 3 and Figure 4 As shown, according to some embodiments of the present application, optionally, the first driving member 3 also includes: a sliding member 324, which is arranged in the shell 1 and is located on the side of the first lens 22 close to the first driving magnet 32 ​​along the second direction, and the first lens 22 is slidably connected to the sliding member 324 along the first direction.

[0050] In this embodiment, the first driving member 3 further includes a sliding member 324, which is disposed on the housing 1, and the first lens 22 is connected to the sliding member 324, so that the first lens 22 can slide along the sliding member 324 under the drive of the first coil 30 and the first driving magnet 32. The sliding member 324 is disposed on the side of the first lens 22 close to the first driving magnet 32 ​​along the second direction, that is, the first coil 30, the first driving magnet 32 ​​and the sliding member 324 are all disposed on the same side of the first lens 22, thereby reducing the space occupied on the other side of the first lens 22, realizing the miniaturized design of the camera module, and facilitating the stacking of multiple devices around the lens module.

[0051] According to some embodiments of the present application, optionally, the sliding member 324 includes at least two guide rods 3240 , and the at least two guide rods 3240 are arranged at intervals along the third direction of the lens module.

[0052] In this embodiment, the sliding member 324 includes at least two guide rods 3240, and the at least two guide rods 3240 are arranged at intervals along the third direction of the lens module, thereby both improving the supporting effect of the first lens 22 and reducing the space occupied on the other side of the first lens 22.

[0053] It can be understood that the length direction of the guide rod 3240 is arranged along the first direction.

[0054] In a specific application, the first direction, the second direction and the third direction are perpendicular to each other.

[0055] like Figure 1 As shown, according to some embodiments of the present application, optionally, a portion of the housing 1 is retracted inwardly of the housing 1 to form a avoiding portion 12 , and the avoiding portion 12 is located at the other side of the first lens 22 along the second direction.

[0056] In this embodiment, since the first driving member 3 and the sliding member 324 are both arranged on the same side of the first lens 22 along the second direction, the space on the other side of the first lens 22 along the second direction can be saved, so that the shell 1 can be retracted at this location to form an escape portion 12, so that the space evacuated by the escape portion 12 can be used to place other components, thereby reducing the space occupied by the shell 1 and realizing the miniaturized design of the electronic device.

[0057] like Figure 3 and Figure 4As shown, according to some embodiments of the present application, optionally, the lens group 2 also includes: a magnetic member 23, which is arranged on the shell 1 and is located on one side of the first lens 22 along the second direction, wherein the first driving magnet 32 ​​is arranged on the first lens 22 and adsorbed with the magnetic member 23; and / or a first carrier 24, the first lens 22 is arranged on the first carrier 24, and one of the first driving magnet 32 ​​and the first coil 30 is arranged on the first carrier 24.

[0058] In this embodiment, the lens group 2 further includes a magnetic member 23, which is disposed on the housing 1. When the first driving magnet 32 ​​is disposed on the first lens 22, the first driving magnet 32 ​​is attracted to the magnetic member 23, so that the first lens 22 is reliably mounted on the housing 1. Optionally, the lens group 2 further includes a first carrier 24, on which the first lens 22 is mounted, thereby protecting the first lens 22, and the first lens 22 can be connected with other structural members through the first carrier 24, thereby avoiding damage such as friction to the first lens 22.

[0059] Optionally, the magnetic member 23 includes a steel sheet.

[0060] Optionally, a mounting carrier is also provided on the outer side of the second lens 21, and the second lens 21 is connected to other structural components through the mounting carrier.

[0061] According to some embodiments of the present application, optionally, the lens group 2 also includes a second lens 21, the prism 20 includes an incident surface 202, a reflecting surface 204 and an exit surface 206, the incident surface 202 is arranged opposite to the light hole 10, the second lens 21 is arranged opposite to the exit surface 206, and the first lens 22 is arranged opposite to the second lens 21, and is located on the side of the second lens 21 away from the prism.

[0062] In this embodiment, the second lens 21 is arranged between the prism 20 and the first lens 22. The light enters the prism 20 through the light hole 10, passes through the incident surface 202, the reflection surface 204 and the exit surface 206 in sequence to enter the second lens 21, and then enters the first lens 22 to achieve telephoto shooting.

[0063] like Figure 4 As shown, according to some embodiments of the present application, optionally, the lens module also includes a magnetic sensor 41 and a plurality of first sensing magnets 40, the magnetic sensor 41 is arranged on the shell 1, the first sensing magnet 40 is arranged on the first lens 22, the plurality of first sensing magnets 40 are arranged in an array along a first direction, and the magnetic sensor 41 determines the position of the first lens 22 according to the magnetic fields of the plurality of first sensing magnets 40.

[0064] In this embodiment, a plurality of first sensing magnets 40 are arranged in an array along a first direction, and the periodic array of first sensing magnets 40 is paired with a magnetic sensor 41 arranged on the housing 1, so as to achieve high-precision position sensing over a long stroke.

[0065] Optionally, the magnetic sensor 41 includes a coding type magnetic sensor.

[0066] Optionally, the N poles and S poles of the plurality of first sensing magnets 40 are alternately arranged in sequence along the first direction.

[0067] like Fig.10 and Fig.11 As shown, according to some embodiments of the present application, optionally, the lens module also includes: a rotating bracket 5, which is arranged on the side of the prism 20 away from the light hole 10 along the third direction, and a first rotating part 50 is provided on the side of the rotating bracket 5 close to the prism 20 along the third direction, and a second rotating part 52 is provided on the other side, the prism 20 is connected to the rotating bracket 5 through the first rotating part 50, and the rotating bracket 5 is connected to the shell 1 through the second rotating part 52, so that the prism 20 can rotate around the second direction relative to the rotating bracket 5, and the prism 20 rotates around the third direction through the rotating bracket 5; a second driving member 6, a part of the second driving member 6 is arranged on the prism 20, and the other part is arranged on the shell 1, for driving the prism 20 to rotate around the second direction or around the third direction to make the lens module anti-shake; wherein the third direction coincides with the optical axis direction of the prism 20.

[0068] In this embodiment, the lens module further includes a rotating bracket 5 and a second driving member 6. The rotating bracket 5 is arranged on a side of the prism 20 away from the light hole 10 along the third direction, so as to avoid blocking the light of the prism 20. The rotating bracket 5 is respectively provided with a first rotating portion 50 and a second rotating portion 52 on both sides along the third direction. The prism 20 is connected to the rotating bracket 5 through the first rotating portion 50, so that the prism 20 can rotate relative to the rotating bracket 5 around the second direction (such as Fig.12 The rotating bracket 5 is rotatably connected to the housing 1 via the second rotating portion 52, so that the rotating bracket 5 and the prism 20 can rotate around the third direction under the drive of the second driving member 6 to achieve anti-shake around the third direction. At the same time, the third direction coincides with the optical axis direction of the prism 20, that is, the rotating bracket 5 and the prism 20 can rotate around the optical axis under the drive of the second driving member 6 (as shown in the arrow direction). Fig.11 At the same time, this arrangement makes the mechanical rotation center coincide with the optical center, and other lenses can be added on the side where the light incident surface of the prism 20 is located, thereby further improving the performance of the camera module.

[0069] It can be understood that the prism 20 can rotate around the second direction relative to the rotating bracket 5 through the first rotating part 50, but when the second driving member 6 drives the prism 20 to rotate around the third direction, the prism 20 and the rotating bracket 5 can be limited and matched, so that the rotating bracket 5 and the prism 20 as a whole rotate around the second rotating part 52. This arrangement makes the prism 20 more reliable in a stable state or a non-working state, and reduces the possibility of static shaking of the prism 20.

[0070] like Fig.10 and Fig.12 As shown, according to some embodiments of the present application, optionally, the lens module also includes: a second carrier 25, the prism 20 is arranged on the second carrier 25, a portion of the second driving member 6 is arranged on the second carrier 25, and a mounting groove 250 is provided on the second carrier 25; the first rotating portion 50 includes at least two first balls 502, a portion of the first balls 502 is embedded in the mounting groove 250, and at least two first balls 502 are arranged at intervals along the second direction so that the prism 20 rotates around the second direction relative to the rotating bracket 5, and when the prism 20 rotates around the third direction, the rotating bracket 5 is limitedly matched with the second carrier 25 through the mounting groove 250, so that the rotating bracket 5 rotates around the third direction with the prism 20.

[0071] In this embodiment, the lens module further includes a second carrier 25, and the prism 20 is disposed on the second carrier 25, and the connection between the prism 20 and other structures is realized through the second carrier 25. Among them, the first rotating part 50 includes at least two first balls 502, and the at least two first balls 502 are arranged at intervals along the second direction to form a rotating shaft along the second direction. The second carrier 25 is provided with a mounting groove 250, and a part of the first balls 502 is embedded in the mounting groove 250, so that the second carrier 25 can drive the prism 20 to rotate around the second direction. At the same time, when the second driving member 6 drives the prism 20 to rotate around the third direction, the rotating bracket 5 is limitedly matched with the second carrier 25 through the mounting groove 250, so that the second carrier 25 and the rotating bracket 5 rotate around the third direction together through the second rotating part 52, thereby ensuring the reliability of the rotation of the prism 20.

[0072] Optionally, the mounting grooves 250 are disposed on both sides of the second carrier 25 along the second direction.

[0073] like Fig.11As shown, according to some embodiments of the present application, optionally, the lens module also includes: at least two elastic members 7, at least two elastic members 7 are located on the side of the prism 20 away from the first lens 22 along the first direction, at least two elastic members 7 are arranged at intervals along the second direction, one end of any elastic member 7 is connected to the shell 1, and the other end is connected to the rotating bracket 5, and the elastic member 7 can reset the prism 20; wherein the second rotating part 52 includes a second ball 520, and the rotating bracket 5 is supported on the shell 1 through the second ball 520.

[0074] In this embodiment, the lens module further includes at least two elastic members 7, which are arranged on the side of the prism 20 away from the first lens 22 along the first direction, and at least two elastic members 7 are arranged at intervals along the second direction, and one end of any elastic member 7 is connected to the housing 1, and the other end is connected to the rotating bracket 5, so that the second ball 520 on the bottom surface of the rotating bracket 5 and the triangle formed by the end (fulcrum a and b) of the at least two elastic members 7 connected to the housing 1 form a rotation plane centered on the second ball 520, so that the rotating bracket 5, the second carrier 25 on the rotating bracket 5 and the prism 20 can rotate around the normal line passing through the second ball 520 on the rotating plane, that is, the whole rotates around the third direction. At the same time, at least two elastic members 7 can provide support force and resilience, thereby ensuring the stability of the rotation of the prism 20 and the reliability of the reset.

[0075] like Fig.15 , Fig.16 , Fig.17 , Fig.18 , Fig.19 and Fig. 20 As shown, according to some embodiments of the present application, optionally, the elastic member 7 includes: a plurality of support portions 70, which are arranged at intervals along a third direction; an elastic bending portion 72, and two adjacent support portions 70 are connected by the elastic bending portion 72; one support portion 70 is supported on the shell 1, and one support portion 70 is connected to the second carrier 25 or the rotating bracket 5; or the shell 1, the second carrier 25 and the rotating bracket 5 are respectively connected to a corresponding support portion 70.

[0076] In this embodiment, the elastic member 7 includes a supporting portion 70 and an elastic bending portion 72, and two adjacent supporting portions 70 are connected by the elastic bending portion 72, wherein one supporting portion 70 is supported on the shell 1, and one supporting portion 70 is connected to the second carrier 25 or the rotating bracket 5; or the shell 1, the second carrier 25 and the rotating bracket 5 are respectively connected to a supporting portion 70, so that one end of the elastic member 7 is supported on the shell 1 and can be connected to at least one of the second carrier 25 and the rotating bracket 5, thereby realizing the support and resetting of the prism 20.

[0077] like Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, according to some embodiments of the present application, optionally, the second driving member 6 includes: a second driving magnet 60 and a second coil 61, which are located on a side of the prism 20 away from the light-through hole 10 along the third direction, the second driving magnet 60 is arranged in one of the shell 1 and the prism 20, and the second coil 61 is arranged in the other of the shell 1 and the prism 20, and when the second coil 61 is energized, the second coil 61 and the second driving magnet 60 can drive the prism 20 to rotate around the second direction; a third driving magnet 62 and a third coil 63, which are located on a side of the prism 20 away from the first lens 22 along the second direction, the third driving magnet 62 is arranged in one of the shell 1 and the prism 20, and the third coil 63 is arranged in the other of the shell 1 and the prism 20, and when the third coil 63 is energized, the third coil 63 and the third driving magnet 62 can drive the prism 20 to rotate around the third direction.

[0078] In this embodiment, the second driving member 6 includes a second driving magnet 60 and a second coil 61 that cooperate with each other, and a third driving magnet 62 and a third coil 63 that cooperate with each other. The second driving magnet 60 and the second coil 61 are located on the side of the prism 20 away from the light-through hole 10 along the third direction, and one of the second driving magnet 60 and the second coil 61 is connected to the prism 20, and the other is connected to the shell 1. When the second coil 61 is energized, the second coil 61 and the second driving magnet 60 drive the prism 20 to rotate around the second direction to achieve anti-shake of the lens module; the third driving magnet 62 and the third coil 63 are located on the side of the prism 20 away from the first lens 22 along the second direction, and one of the two is set on the shell 1, and the other is connected to the prism 20. When the third coil 63 is energized, the third coil 63 and the third driving magnet 62 drive the prism 20 to rotate around the third direction to achieve anti-shake of the prism 20 around the third direction.

[0079] Optionally, the number of the third coils 63 is at least two, and at least two third coils 63 are arranged at intervals along the second direction.

[0080] like Fig.13As shown, according to some embodiments of the present application, optionally, the lens module also includes a second sensing magnet 42 and a first sensing chip 43, one of the second sensing magnet 42 and the first sensing chip 43 is arranged on the prism 20, and the other is arranged on the shell 1, the second sensing magnet 42 and the first sensing chip 43 are arranged relative to each other along the third direction, and are used to detect the position information of the prism 20 when it rotates along the second direction according to the magnetic field of the second driving magnet 60 and the second sensing magnet 42; and / or a third sensing magnet 44 and a second sensing chip 45, one of the third sensing magnet 44 and the second sensing chip 45 is arranged on the prism 20, and the other is arranged on the shell 1, the third sensing magnet 44 and the second sensing chip 45 are arranged relative to each other along the second direction, and are used to detect the position information of the prism 20 when it rotates along the third direction according to the magnetic field of the third sensing magnet 44 and the third driving magnet 62.

[0081] In this embodiment, the lens module also includes a second sensing magnet 42 and a first sensing chip 43 that cooperate with each other. One of the second sensing magnet 42 and the first sensing chip 43 is arranged on the prism 20, and the other is arranged on the shell 1. When the second driving magnet 60 and the second coil 61 drive the prism 20 to rotate around the second direction, the first sensing chip 43 detects the position of the prism 20 through the magnetic field of the second driving magnet 60 and the second sensing magnet 42, and then feeds back to the processor to realize the detection and adjustment of the position of the prism 20; optionally, the lens module also includes a third sensing magnet 44 and a second sensing chip 45 that cooperate with each other. When the third driving magnet 62 and the third coil 63 drive the prism 20 to rotate around the third direction, the second sensing chip 45 detects the position of the prism 20 according to the magnetic field of the third driving magnet 62 and the third sensing magnet 44, and then feeds back to the processor to realize the detection and adjustment of the position of the prism 20.

[0082] Optionally, the housing 1 includes a base 16 and an outer shell 14 , the outer shell 14 is covered on the base 16 , the light hole 10 is set in the outer shell 14 , and the first coil 30 , the second coil 61 , the third coil 63 , the second lens 21 , the first lens 22 and the prism 20 are set on the base 16 .

[0083] An embodiment of the present application proposes an electronic device, comprising: a frame; and a lens module as proposed in any one of the above items, and therefore has all the beneficial effects of the lens module, which will not be repeated here.

[0084] In specific applications, the lens module proposed in this application has at least the following beneficial effects:

[0085] 1. Focus system

[0086] 1) Improve the magnetic leakage interference of long-stroke automatic focus (AF): adopt an array magnet (such as the first drive magnet 32) + a double coil (such as the first coil 30) magnetic circuit layout to greatly reduce external magnetic leakage, which is conducive to the close stacking of multiple cameras and effectively improves space utilization.

[0087] 2) Compact structure: single-side drive system + single-side guide rod 3240 slide rail, asymmetric design on both sides, and the other side is retracted to achieve miniaturization.

[0088] 3) Improve thrust efficiency: Adopt dual-coil alternating drive system to improve thrust stability and coil working efficiency.

[0089] 4) Improve the accuracy of the feedback system: Use a periodic feedback system consisting of an array magnet + a tunnel magnetoresistive (TMR) sensor to improve the accuracy of long-stroke position feedback.

[0090] 2. Anti-shake system

[0091] 1) Alignment of the mechanical center with the optical center: A double-layer nested ball structure (such as the rotating bracket 5) is used to achieve the coincidence of the rotation center with the optical axis center of the prism 20.

[0092] 2) Centered hovering: Using a spring sheet (such as elastic member 7) suspension to achieve center hovering in a natural position, improve the eccentric appearance in a natural state, and help to improve the startup speed and response effect of anti-shake control, while helping to reduce impact and improve reliability.

[0093] The lens module proposed in this application includes a focusing structure and an anti-shake structure.

[0094] Figure 1 This is the overall appearance view, in which one side is partially retracted and made into an irregular shape to achieve miniaturization of the drive device.

[0095] The lens module includes an AF autofocus lens group functional area (hereinafter referred to as AF functional area) and a prism 20 anti-shake functional area, and the two functional areas are placed on the same base 16. The AF autofocus lens group functional area can also include a movable lens group (such as the first lens 22) and a fixed lens group (such as the second lens 21).

[0096] The movable lens group is mounted and fixed on the lens group 2 carrier (for example, the first carrier 24). The lens group 2 carrier is supported on the right side wall of the base 16 through the first guide rod and the second guide rod, and is pressed and fitted by the adsorption force between the first driving magnet 32 ​​fixed on the lens group 2 carrier and the magnetic steel sheet (for example, the magnetic member 23) fixed on the base 16. When the first coil 30 is energized, the lens group 2 carrier can move forward and backward (for example, along the first direction) along the direction of the guide rod 3240. A periodic array sensing magnet (for example, the first sensing magnet 40) is installed at the bottom of the lens group 2 carrier, which is paired with the encoding magnetic sensor set on the base 16 to achieve high-precision position sensing over a long stroke.

[0097] Figure 6 The following is an example diagram of the positions of two first coils 30 and a multi-pole magnet (a magnet array of multiple first magnetic poles 320 and multiple second magnetic poles 322). The example is illustrated using a 4-pole magnet as an example. The first coil 30 is fixed and the magnet is movable in a direction parallel to the first coil 30.

[0098] Figure 7 A conceptual diagram showing the segmented switching operation of the first coil 30 is shown. Figure 8 The figure shows the thrust displacement diagram of the double coils when the first coil 30 is fixedly passed through the full stroke. Figure 7 and Figure 8 C1 in the figure represents one of the first coils 30, and C2 represents another first coil 30. Figure 7 The "2" in the figure indicates that both sides of the first coil 30 are in the effective magnetic field area. Figure 7 The "1" in indicates that the first coil 30 is in the effective magnetic field area on one side. Figure 7 The "0" in indicates that both sides of the first coil 30 are in the non-magnetic area. The segmented switching of the first coil 30 can achieve the highest thrust efficiency. Of course, for some special application scenarios, the dual coils can also work at the same time to achieve a greater thrust effect.

[0099] Fig. 9 The magnetic flux leakage simulation diagram of the lens module proposed in this application is shown. Fig.21 The magnetic flux leakage simulation diagram of the magnetic field generated by the magnet 1' and the corresponding coil 2' in the lens module in the related art is shown. Fig. 9 and Fig.21 It can be seen that the magnetic leakage of the magnet array used in this application is smaller, which is beneficial to reducing the stacking gap with surrounding magnetic devices.

[0100] Fig.10It is an exploded view of the optical image stabilization (OIS) functional area. The OIS functional area can drive the prism 20 to realize the rotation of the pitch axis (pitch axis, such as the second direction) and the yaw axis (yaw axis, such as the third direction). The overall structure is a double-layer rotating structure, in which the rotation axis of the pitch axis is composed of two balls (such as the first ball 502), and the yaw axis is composed of a ball (such as the second ball 520) as the rotation center, and is supported by a spring to achieve the stability of the rotation plane. The driving force of the yaw axis is arranged on the back of the prism 20, and the driving force of the pitch axis is arranged on the bottom of the prism 20.

[0101] Fig.11 The rotating bracket 5 of the yaw axis is described below. The triangle formed by the ball (such as the second ball 520) on the bottom surface of the rotating bracket 5 and the spring fulcrums a and b forms a rotation plane centered on the ball, and the entire system can rotate around the fulcrum surface normal. The spring fulcrums a and b provide support and resilience.

[0102] Fig.12 The pitch axis rotation suspension is described below: The balls on both sides of the rotating bracket 5 bear against the support of the prism 20 (eg, the second carrier 25), and the two balls form a rotation axis around which the support of the prism 20 can rotate.

[0103] Specifically, the driving magnet of the pitch axis (for example, the second driving magnet 60) and the second coil 61 are arranged on the bottom surface of the prism 20. When the second coil 61 is energized, the prism 20 can be rotated around the pitch axis; the yaw axis is composed of two third coils 63. When the third coil 63 is energized, it can push the prism 20 to rotate around the yaw axis.

[0104] Optionally, the feedback structure (eg, the second sensing magnet 42, the third sensing magnet 44, the first sensing chip 43, and the second sensing chip 45) is arranged on the back side of the prism 20, and the sensing magnet and the driving magnet jointly provide a magnetic field for feedback.

[0105] Optionally, Fig.15 and Fig.16 The connection structure of the elastic member 7 (such as the support portion 70) and Fig.17 and Fig.18 The connection structure of the elastic member 7 is the same, and different chord portions (such as the elastic bending portion 72) are made into features. Fig.19 and Fig. 20 Only the connection position between the elastic member 7 and the rotating bracket 5 and the base 16 is retained, and the upper part is cut. The elastic member 7 is set to different shapes to meet different structural and performance requirements. Of course, more other structural features can also be made.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0107] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A lens module, characterized in that: include: The housing is provided with a light-through hole; A lens group is disposed in the housing, the lens group includes a prism and a first lens, light passes through the prism and the first lens in sequence from the light-through hole, and the first lens is movably connected to the housing along a first direction; a first driving member, located at one side of the first lens along the second direction, the first driving member comprising a first coil and a first driving magnet spaced and arranged opposite to each other along the second direction, one of the first coil and the first driving magnet being arranged at the housing, and the other being arranged at the first lens, Among them, the first driving magnet includes a plurality of first magnetic poles and a plurality of second magnetic poles, and the plurality of first magnetic poles and the plurality of second magnetic poles are alternately arranged along the first direction, and the magnetic properties of the first magnetic poles and the second magnetic poles are opposite. When the first coil is energized, the first coil and the first driving magnet drive the first lens to move along the first direction to focus the lens module.

2. The lens module according to claim 1, characterized in that: The number of the first coils is at least two, and the at least two first coils are arranged at intervals along the first direction. When the first coils are energized, the at least two first coils work alternately or simultaneously.

3. The lens module according to claim 1, characterized in that: The first driving member further comprises: The sliding member is arranged on the housing and is located at a side of the first lens close to the first driving magnet along the second direction. The first lens is slidably connected to the sliding member along the first direction.

4. The lens module according to claim 3, characterized in that: The sliding member includes at least two guide rods, and the at least two guide rods are arranged at intervals along the third direction of the lens module.

5. The lens module according to claim 4, characterized in that: A portion of the housing is retracted inwardly of the housing to form a relief portion, and the relief portion is located at the other side of the first lens along the second direction.

6. The lens module according to claim 1, characterized in that: The lens assembly also includes: A magnetic member is disposed on the housing and is located on one side of the first lens along the second direction, wherein the first driving magnet is disposed on the first lens and is attracted to the magnetic member; and / or a first carrier, the first lens being disposed on the first carrier, and one of the first driving magnet and the first coil being disposed on the first carrier; and / or a second lens, the prism comprising an incident surface, a reflecting surface and an exiting surface, the incident surface being arranged opposite to the light hole, the second lens being arranged opposite to the exiting surface, the first lens being arranged opposite to the second lens and being located on a side of the second lens away from the prism; and / or The lens module also includes a magnetic sensor and a plurality of first sensing magnets. The magnetic sensor is disposed on the housing, the first sensing magnet is disposed on the first lens, and the plurality of first sensing magnets are arranged in an array along the first direction. The magnetic sensor determines the position of the first lens according to the magnetic fields of the plurality of first sensing magnets.

7. The lens module according to any one of claims 1 to 6, characterized in that: Also includes: A rotating bracket is provided at a side of the prism away from the light-through hole along the third direction, a first rotating part is provided on one side of the rotating bracket close to the prism along the third direction, and a second rotating part is provided on the other side, the prism is connected to the rotating bracket through the first rotating part, and the rotating bracket is connected to the housing through the second rotating part, so that the prism can rotate around the second direction relative to the rotating bracket, and the prism rotates around the third direction through the rotating bracket; A second driving member, a portion of which is disposed on the prism and another portion of which is disposed on the housing, and is used to drive the prism to rotate around the second direction or around the third direction to prevent the lens module from shaking; Wherein, the third direction coincides with the optical axis direction of the prism.

8. The lens module according to claim 7, characterized in that: Also includes: a second carrier, the prism being disposed on the second carrier, a part of the second driving member being disposed on the second carrier, and a mounting groove being disposed on the second carrier; The first rotating part includes at least two first balls, a part of which is embedded in the mounting groove, and at least two of the first balls are arranged at intervals along the second direction so that the prism can rotate around the second direction relative to the rotating bracket, and when the prism rotates around the third direction, the rotating bracket is limitedly engaged with the second carrier through the mounting groove so that the rotating bracket rotates around the third direction with the prism.

9. The lens module according to claim 8, characterized in that: Also includes: At least two elastic members, at least two of the elastic members are located on a side of the prism away from the first lens along the first direction, at least two of the elastic members are spaced apart along the second direction, one end of any of the elastic members is connected to the housing, and the other end is connected to the rotating bracket, and the elastic member can reset the prism; Wherein, the second rotating part includes a second ball, and the rotating bracket is supported on the shell through the second ball.

10. The lens module according to claim 7, characterized in that: The second driving member comprises: A second driving magnet and a second coil are located on a side of the prism away from the light-through hole along the third direction, the second driving magnet is provided at one of the housing and the prism, and the second coil is provided at the other of the housing and the prism, and when the second coil is energized, the second coil and the second driving magnet can drive the prism to rotate around the second direction; The third driving magnet and the third coil are located on the side of the prism away from the first lens along the second direction. The third driving magnet is arranged on one of the shell and the prism, and the third coil is arranged on the other of the shell and the prism. When the third coil is energized, the third coil and the third driving magnet can drive the prism to rotate around the third direction.

11. The lens module according to claim 10, characterized in that: Also includes: a second sensing magnet and a first sensing chip, wherein one of the second sensing magnet and the first sensing chip is disposed on the prism, and the other is disposed on the housing, and the second sensing magnet and the first sensing chip are disposed opposite to each other along the third direction, and are used to detect position information of the prism when it rotates along the second direction according to the magnetic fields of the second driving magnet and the second sensing magnet; and / or A third sensing magnet and a second sensing chip, one of the third sensing magnet and the second sensing chip is arranged on the prism, and the other is arranged on the shell, the third sensing magnet and the second sensing chip are arranged opposite to each other along the second direction, and are used to detect the position information of the prism when it rotates along the third direction according to the magnetic fields of the third sensing magnet and the third driving magnet.

12. An electronic device, characterized in that: include: Frame; and The lens module according to any one of claims 1 to 11, wherein the lens module is arranged in the frame.

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